if (useNinjaDepfile) {
// Create a custom command that generates a timestamp file and
// has a depfile assigned. The depfile is created by JobDepFilesMergeT.
-
- // Add additional autogen target dependencies
+ //
+ // Also create an additional '_autogen_timestamp_deps' that the custom
+ // command will depend on. It will have no sources or commands to
+ // execute, but it will have dependencies that would originally be
+ // assigned to the pre-Qt 5.15 'autogen' target. These dependencies will
+ // serve as a list of order-only dependencies for the custom command,
+ // without forcing the custom command to re-execute.
+ //
+ // The dependency tree would then look like
+ // '_autogen_timestamp_deps (order-only)' <- '/timestamp' file <-
+ // '_autogen' target.
+ const auto timestampTargetName =
+ cmStrCat(this->GenTarget->GetName(), "_autogen_timestamp_deps");
+ std::vector<std::string> timestampTargetProvides;
+ cmCustomCommandLines timestampTargetCommandLines;
+
+ // Add additional autogen target dependencies to
+ // '_autogen_timestamp_deps'.
for (const cmTarget* t : this->AutogenTarget.DependTargets) {
dependencies.push_back(t->GetName());
}
+
+ cmTarget* timestampTarget = this->LocalGen->AddUtilityCommand(
+ timestampTargetName, true, this->Dir.Work.c_str(),
+ /*byproducts=*/timestampTargetProvides,
+ /*depends=*/dependencies, timestampTargetCommandLines, false, nullptr);
+ this->LocalGen->AddGeneratorTarget(
+ cm::make_unique<cmGeneratorTarget>(timestampTarget, this->LocalGen));
+
+ // Set FOLDER property on the timestamp target, so it appears in the
+ // appropriate folder in an IDE or in the file api.
+ if (!this->TargetsFolder.empty()) {
+ timestampTarget->SetProperty("FOLDER", this->TargetsFolder);
+ }
+
+ // Make '/timestamp' file depend on '_autogen_timestamp_deps' and on the
+ // moc and uic executables (whichever are enabled).
+ dependencies.clear();
+ dependencies.push_back(timestampTargetName);
+
+ if (this->Moc.ExecutableTarget != nullptr) {
+ dependencies.push_back(this->Moc.ExecutableTarget->Target->GetName());
+ }
+ if (this->Uic.ExecutableTarget != nullptr) {
+ dependencies.push_back(this->Uic.ExecutableTarget->Target->GetName());
+ }
+
+ // Create the custom command that outputs the timestamp file.
const char timestampFileName[] = "timestamp";
const std::string outputFile =
cmStrCat(this->Dir.Build, "/", timestampFileName);
info.SetConfig("PARSE_CACHE_FILE", this->AutogenTarget.ParseCacheFile);
info.Set("DEP_FILE", this->AutogenTarget.DepFile);
info.Set("DEP_FILE_RULE_NAME", this->AutogenTarget.DepFileRuleName);
+ info.SetArray("CMAKE_LIST_FILES", this->Makefile->GetListFiles());
info.SetArray("HEADER_EXTENSIONS",
this->Makefile->GetCMakeInstance()->GetHeaderExtensions());
info.SetArrayArray(